A ball hits a vertical wall horizontally at 10m/s bounces back at 10 m/s
A
There is no acceleration because 
B
There may be an acceleration because its initial direction is horizontal
C
There is an acceleration because there is a momentum change
D
Even though there is no change in momentum there is a change in direction. Hence it has an acceleration
Text Solution
Verified by ExpertsThe correct answer is:
C
As the ball bounces back with same speed so change in momentum = 2 mv
and we know that force = rate of change of momentum
i.e. force will act on the ball so there is an acceleration.
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